<template>
  <div class="todo-container">
    <div class="todo-wrap">
      <Header :addNewTodo="addNewTodo"/>
      <List :todoList="todoList" :singleCheckHandle="singleCheckHandle" :singleDeleteHandle="singleDeleteHandle"/>
      <Footer :todoList="todoList" :checkAllHandle="checkAllHandle" :deleteAllFinishHandle="deleteAllFinishHandle"/>
    </div>
  </div>
</template>

<script>
import { v4 as uuidv4 } from 'uuid';
import Header from "./Header";
import List from "./List";
import Footer from "./Footer";
export default {
  name: "App",
  data(){
    return {
      todoList:[
        {id:uuidv4(),thing:'唱',done:false},
        {id:uuidv4(),thing:'跳',done:true},
        {id:uuidv4(),thing:'rap',done:false},
      ]
    }
  },
  components: {
    Header,
    List,
    Footer,
  },
  methods:{
    //添加
    addNewTodo(newTodo){
      this.todoList.push(newTodo)
    },
    //单选
    singleCheckHandle(id){
      this.todoList = this.todoList.map(item => {
        return item.id === id ? {...item,done:!item.done} : item
      })
    },
    //单个删除
    singleDeleteHandle(id){
      const isDelete = confirm('你真的要删除吗？')
      if(!isDelete) return
      this.todoList = this.todoList.filter(item => {
        return item.id !== id
      })
    },
    //全选
    checkAllHandle(value){
       this.todoList = this.todoList.map(item => {
          return {...item,done:value}
        })
    },
    //删除已完成
    deleteAllFinishHandle(){
      this.todoList = this.todoList.filter(item => {
        return !item.done 
      })
    }
  },
  mounted(){
    this.todoList = JSON.parse(localStorage.getItem('todoList') || '[]')
  },
  watch:{
    todoList:{
      deep:true,
      handler(){
        localStorage.setItem('todoList',JSON.stringify(this.todoList))
      }
    }
  }
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>